title: Comparison of Barium and Arsenic Concentrations in Well Drinking Water and in Human Body Samples and a Novel Remediation System for These Elements in Well Drinking Water.
abstract: Health risk for well drinking water is a worldwide problem. Our recent studies showed increased toxicity by exposure to barium alone (≤700 µg/L) and coexposure to barium (137 µg/L) and arsenic (225 µg/L). The present edition of WHO health-based guidelines for drinking water revised in 2011 has maintained the values of arsenic (10 µg/L) and barium (700 µg/L), but not elements such as manganese, iron and zinc. Nevertheless, there have been very few studies on barium in drinking water and human samples. This study showed significant correlations between levels of arsenic and barium, but not its homologous elements (magnesium, calcium and strontium), in urine, toenail and hair samples obtained from residents of Jessore, Bangladesh. Significant correlation between levels of arsenic and barium in well drinking water and levels in human urine, toenail and hair samples were also observed. Based on these results, a high-performance and low-cost adsorbent composed of a hydrotalcite-like compound for barium and arsenic was developed. The adsorbent reduced levels of barium and arsenic from well water in Bangladesh and Vietnam to <7 µg/L within 1 min. Thus, we have showed levels of arsenic and barium in humans and propose a novel remediation system.
authors.affiliation: Unit of Environmental Health Sciences, Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai, Japan ; Voluntary Body for International Health Care in Chubu University, Kasugai, Japan ; Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Kato
authors.forename: Mayuko Y
authors.initials: MY
authors.lastname: Kumasaka
authors.forename: Shoko
authors.initials: S
authors.lastname: Ohnuma
authors.forename: Akio
authors.initials: A
authors.lastname: Furuta
authors.forename: Yoko
authors.initials: Y
authors.lastname: Kato
authors.forename: Hossain U
authors.initials: HU
authors.lastname: Shekhar
authors.forename: Michiyo
authors.initials: M
authors.lastname: Kojima
authors.forename: Yasuko
authors.initials: Y
authors.lastname: Koike
authors.forename: Nguyen
authors.initials: N
authors.lastname: Dinh Thang
authors.forename: Nobutaka
authors.initials: N
authors.lastname: Ohgami
authors.forename: Thuy Bich
authors.initials: TB
authors.lastname: Ly
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Jia
authors.forename: Husna
authors.initials: H
authors.lastname: Yetti
authors.forename: Hisao
authors.initials: H
authors.lastname: Naito
authors.forename: Gaku
authors.initials: G
authors.lastname: Ichihara
authors.forename: Ichiro
authors.initials: I
authors.lastname: Yajima
mesh_terms: D000327:Adsorption; D001151:Arsenic / Q000032:analysis* / Q000652:urine; D001459:Bangladesh; D001464:Barium / Q000032:analysis* / Q000652:urine; D002118:Calcium / Q000032:analysis / Q000652:urine; D060766:Drinking Water / Q000032:analysis*; D006197:Hair / Q000737:chemistry; D006801:Humans; D008274:Magnesium / Q000032:analysis / Q000652:urine; D013058:Mass Spectrometry; D009262:Nails / Q000737:chemistry; D013324:Strontium / Q000032:analysis / Q000652:urine; D060986:Water Wells
chemical_list: D060766:Drinking Water; D001464:Barium; D008274:Magnesium; D001151:Arsenic; D002118:Calcium; D013324:Strontium